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Archive for the ‘energy’ category: Page 155

Mar 30, 2022

IoT warning: Hackers are gaining access to UPS devices. Here’s how to protect yours

Posted by in categories: energy, internet

Hackers are targeting internet-connected uninterruptible power supply devices. CISA wants you to protect yours better.

Mar 29, 2022

Large-scale, high-temperature heat pump for district heating

Posted by in category: energy

Vattenfall and Siemens Energy are building an 8MW heat pump for district heating applications in Berlin. The facility will be powered by wind and solar via the electrical grid and will provide heating and cooling to the local district heating network.

Mar 29, 2022

Bill Gates and Blackrock are backing the start-up behind hydropanels that make water out of thin air

Posted by in categories: business, energy, sustainability

Source’s hydropanels are installed in 52 countries in 450 separate projects. The company has raised $150 million from investors including Bill Gates’ Breakthrough Energy Ventures, BlackRock, Duke Energy and the Lightsmith Group.

This type of technology is desperately needed in places like India, where an estimated 800,000 villages don’t have clean drinking water. Friesen cited World Health Organization, showing that by 2025 “half the world’s population will be in water stressed areas.”

There’s a domestic need as well. In the U.S, there are 1.5 million miles of lead pipes still in the ground, and about 750 water main breaks a day, according to Friesen. The business opportunity, he said, is enormous.

Mar 29, 2022

Scientists build circuit that generates clean, limitless power from graphene

Posted by in categories: energy, physics

Physicists has successfully developed a circuit capable of capturing graphene’s thermal motion and converting it into an electrical current.

Mar 27, 2022

Atp-Adp Energy Cycle

Posted by in category: energy

This Video Explains ATP-ADP Energy Cycle.
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Mar 25, 2022

Sodium-Based Material Yields Stable Alternative to Lithium-Ion Batteries

Posted by in categories: energy, materials

University of Texas at Austin (UT Austin) researchers have created a new sodium-based battery material that is highly stable, capable of recharging as quickly as a traditional lithium-ion battery, and able to pave the way toward delivering more energy than current battery technologies.

For about a decade, scientists and engineers have been developing sodium batteries, which replace both lithium and cobalt used in current lithium-ion batteries with cheaper, more environmentally friendly sodium. Unfortunately, in earlier sodium batteries, a component called the anode would tend to grow needle-like filaments called dendrites that can cause the battery to electrically short and even catch fire or explode.

In one of two recent sodium battery advances from UT Austin, the new material solves the dendrite problem and recharges as quickly as a lithium-ion battery. The team published their results in the journal Advanced Materials.

Mar 24, 2022

Eliminating the bottlenecks in performance of lithium-sulfur batteries

Posted by in categories: energy, materials

Energy storage in lithium-sulfur batteries is potentially higher than in lithium-ion batteries but they are hampered by a short life. Researchers from Uppsala University in Sweden have now identified the main bottlenecks in performance.

Lithium-sulfur batteries are high on the wish-list for future batteries as they are made from cheaper and more environmentally friendly materials than . They also have higher capacity and work well at much lower temperatures. However, they suffer from short lifetimes and . An article just published in the journal Chem by a research group from Uppsala University has now identified the processes that are limiting the performance of the sulfur electrodes that in turn reduces the current that can be delivered. Various different materials are formed during the discharge/charge cycles and these cause various problems. Often a localized shortage of lithium causes a bottleneck.

“Learning about problems allows us to develop new strategies and materials to improve battery performance. Identifying the real bottlenecks is needed to take the next steps. This is big research challenge in a system as complex as lithium-sulfur,” says Daniel Brandell, Professor of Materials Chemistry at Uppsala University who works at the Ångström Advanced Battery Centre.

Mar 24, 2022

Breathe Easy With This LED Air Sensor Necklace

Posted by in categories: energy, internet, wearables

When you’re building wearables and glowables, sometimes a flashy rainbow animation is all you need. [Geeky Faye] likes to go a little further, however, and built this impressive necklace that serves to inform on the local air quality.

The necklace consists of a series of Neopixel LED strips, housed within a tidy 3D printed housing made with flexible filament. A dovetail joint makes putting on and removing the necklace a cinch. A TinyPico V2, based on the ESP32, runs the show, as it’s very small and thus perfect for the wearable application. A USB power bank provides power to the microcontroller and LEDs.

Continue reading “Breathe Easy With This LED Air Sensor Necklace” »

Mar 22, 2022

New ferrocenium-based anion-exchange membranes for fuel cells

Posted by in categories: chemistry, energy

Anion exchange membranes (AEMs) are semipermeable fuel cell components that can conduct anions but reject cations and gases. This enables the partition of substances that could chemically react with one another, thus allowing the cells to operate properly.

A team of researchers at Tianjin University in China have recently developed new types of AEMs that are based on a newly designed ferrocenium material. Their membranes, presented in a paper published in Nature Energy, were found to achieve highly promising results in terms of power output, durability, and ohmic resistance.

“As the oriented mixed-valence ferrocenium material developed in our study is entirely new for the AEM field, we encountered many difficulties and frustrations along the way,” Michael D. Guiver, one of the researchers who carried out the study, told TechXplore. “We spent a long research period and much effort, both experimentally and theoretically, to achieve these good outcomes. The whole process from initial conceptualization to final publication was convoluted, but fortunately successful.”

Mar 22, 2022

Iron Dome laser-based option, Iron Beam, takes major step forward

Posted by in categories: energy, government

TEL AVIV: Israel has made a small but significant step towards a laser-based system that is capable of intercepting missiles, with the announcement that the country’s “Iron Beam” system officially has a budget.

The program, which has existed in some form of R&D for more than a decade, has faced headwinds as a result of a long-running conflict between proponents and opponents of laser-based defense systems. But the technology appears to have matured to the point the government is now willing to put real money behind it.

Defense sources here say that the initial effort will be to develop an electric 100–150 kW solid-state laser that will be capable of intercepting rockets and missiles. The idea is to use two laser guns to create the needed power.